Patent US2582613A successfully refreshed from Google Patents.
US2582613A
Expired / Lapsed
US
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Products obtained from a polyethylene melamine
Assignee: Wyeth Holdings LLC
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Filing: 1950-11-25
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Granted: 1952-01-15
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Expires: 1970-11-25
Abstract
No abstract record available.
Inventors
- 👤 Henry P Wohnsiedler
- 👤 Edward L Kropa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:16
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0273; C08G73/06; C08G73/0622; C08G73/0638; C08G73/0644
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A COMPOSITION COMPRISING THE PRODUCT OF REACTION OF INGREDIENTS COMPRISING (1) A POLYETHYLENE MELAMINE WHICH IS A POLYAMINO-S-TRIAZINE WHEREIN AT LEAST TWO OF THE AMINO NITROGEN ATOMS EACH HAS ONE ETHYLENE GROUP ATTACHED THERETO INSTEAD OF THE TWO HYDROGEN ATOMS AND (2) PHENOL.
Claim 2
Dependent Claim
43 words
A COMPOSITION COMPRISING THE PRODUCT OF REACTION OF INGREDIENTS COMPRISING (1) A POLYETHYLENE MELAMINE WHICH IS A POLYAMINO-S-TRIAZINE WHEREIN AT LEAST TWO OF THE AMINO NITROGEN ATOMS EACH HAS ONE ETHYLENE GROUP ATTACHED THERETO INSTEAD OF THE TWO HYDROGEN ATOMS AND (2) PHENOL.
References Cited (Backward Citations)
US2524727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |